Avoiding Catastrophe: Why the 1UZ Non-VVTI Needs a Timing Correction Kit with 3UZ Oil Pumps
If you are a UZ enthusiast, you already know that the 1UZ non-VVTI is a legendary powerhouse. However, as these engines age, certain OEM parts are becoming harder to find. Specifically, 1UZ non-VVTI oil pumps are no longer available from Toyota, leading many builders to swap in the more abundant 3UZ oil pump.